Dynamic gravity for characters

Development Programming & Scripting C++
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230

Hi

I had to make a local change to get smooth movement on the player for our project. Using a (quite big) spherical world seems to make the delta between old-new gravity directions too big to get a smooth transition .

Therefor I had to disable the return statement in ninjacharacter.cpp (which sets the control rotation).

Also added a rotator lerp in the movementcomponent (that still has the return statement a few lines prior).

Do you think will have a huge impact on performance eventually? If so, what would you recommend to smoothen out the (rotational)movement? Using camera lag smoothens it out a little, but not entirely (and we rather don’t have much lag on the camera)

NinjaCharacter.cpp line 223:


if ((LastAxisZ | NewAxisZ) >= THRESH_NORMALS_ARE_PARALLEL)
{
     //return;
}

NinjaCharacterMovementComponent.cpp line 5380:




// Abort if angle between new and old capsule 'up' axes almost equals to 0 degrees
if ((DesiredCapsuleUp | CurrentCapsuleUp) >= THRESH_NORMALS_ARE_PARALLEL)
{
     return;
}

//// Take desired Z rotation axis of capsule, try to keep current X rotation axis of capsule
const FRotator NewRotation = FNinjaMath::MakeFromZQuat(DesiredCapsuleUp,
UpdatedComponent->GetComponentQuat()).Rotator();
**const FRotator CurrentRotation = FNinjaMath::MakeFromZQuat(CurrentCapsuleUp,
UpdatedComponent->GetComponentQuat()).Rotator();**

if (!bRotateAroundCenter)
{
     float PawnRadius, PawnHalfHeight;
     CharacterOwner->GetCapsuleComponent()->GetScaledCapsuleSize(PawnRadius, PawnHalfHeight);

     // Rotate capsule around the origin of the bottom sphere
     const float SphereHeight = PawnHalfHeight - PawnRadius;
     const FVector Delta = CurrentCapsuleUp * (SphereHeight * -1.0f) + DesiredCapsuleUp * SphereHeight;

     **FRotator RotationLerp = UKismetMathLibrary::RInterpTo(CurrentRotation, NewRotation, GetWorld()->GetDeltaSeconds(), 4.0f);**

     // Not using MoveUpdatedComponent to bypass constraints
     UpdatedComponent->MoveComponent(Delta, **RotationLerp**, true);
}

nonetheless, nice work on the update!! Especially the new debug options are really useful!